Valve



J. .1, ROOT, JR

Oct. 20, 1931.

VALVE Filed Aug. 16, 1927 A TTORNEYS.

Patented Oct. 20, 1931 y Leren j JOSEPH J. nooT, JR., o-F vcnIcAefo, ILLINOIS f.

` VALVE Appucation mea .august 16,'1927. seria11vo.2i3,32a.

This invention relates -to a novel and improved Vvalve, and -more particularly .toy a valve adapted for use at thefoutlet of a container. While it .is not solimited, I shall IFF describe Vit as employed with the outlet of a ytank car. y

The invention will be best understood from the lfollowing. description and the Aaccompanying drawings, in which v 10 ffFig. ,1f is a longitudinal sectional view through .ad'evice embodying my invention..

Fi'gp2 is a plan viewpof the device yas it appearsin Fig.'1.""- Y FigfS is apt-fragmentary sectional view on thesame'plane as l, but showing amodi- Vfiedlform of nut kfor the operating stem.

Inith'ef selected embodimentwhich I have v illustrated; theinvention' is. shown as ap'-,

plied to a container, exemplified by a tank .zo'having its wallljforrned of the usual sheet,

and this wall is provided with an opening 2.'v

Surrounding `the opening on the outer yside of the wall, is a casing 3 having a iiange 4 secured. to the wall as byrivets. Y

4 .The casing is provided with a transversely extending .bridged forming a guide, in whichY is slidably mounted aguidingmember 7 se# Y Acured to a'valve 8which coacts with a valve! seat 9fon the casing'. The casing 3 is pro-` Vided'with a recessl() surrounding the valve 8 and received'wihin this Yrecess is aring 11 which is threaded into engagement with the wallfofthe' recess,va"s shown. This ring is part `of a cage-12 which carries la nut 13 secured in position as by a jdowel pin 14. Threaded through the nut is the operating stem.l Y .for'the valve,` thisstem kbeing pro'- vided with a shank lsuitably shaped to engagea rod orthe like by which it may be optom'ary intank cars. Itvvillfof course be understood that when the valve is usedvinV other locations, equivalent operating. means may be employed.

adapted to contactj with al corresponding cur'vedsurface 18. on the head/19 of the stem.l The valve is also providedwith a box `in erated fromthetop ofjthe tank, as.V is cus which is received the head V19, andV itwill. be Y seen that the tbp'-the'headhas its edges lying'in substantially the same plane as the top e'dges'ofbox, 'and that the yhead is provided' with inclined 'or'tapered sides 21,-and

these sides are spaced from the inner walls of;

the box 20. l The head and the box may be of any desired 'shape'in cross-section,sologs the walls of the box are spaced fromthe sides ,of the head, but are preferably square, as shown in Fig. 2; By providing the head with ve0 'the `tapered portion, I veliminate they necessity of'niachining the valve seat with the same Y accuracy as vwould otherwise be necessary.A Itis possible'to have the stein and the valve loutv off alin'ement to" a' considerable degree, e5 'without afectingthe' operation of the device. f This construction permits relativ-e' movement y,between the valve andthe stem'which operates it.`. The'stem is loosely held inop'fl 1.

`erative position with respect to the valve, by

means ofl a nut 22 .threadedv 'on the boxand having an annular flange23vadaptedI toengagefthe shoulder 24 on the head. The nut is vprovided with openings 25 :for the yreception of a Spannerv wrench, andmay be'secu'red by 75 afset screw, as shown.

Themovement ofthe nut onthe boxl islim- I ited bymeans of a shoulder-26` disposed 'on the iange` and `adapted to contact-with th-e y 'top edge of the'box ,'The cage` cooperates so [with they nut 22t'oguide the -valvez'in its amovements to and'A rom'its seat.v f

` Thefca-geis provided `with' a plurality of Y outwardly extending ea'rs`27,l each provided l,with a set screw 28 adapted to Contact with 85 `the inner surfac'ekofthewall 'This arf- `rangement prevents the cage from becoming lloosened and vprovides 'a simplel andjeflicient means for locking it in position. Moreover,

this arrangementr provides additional means fory holding the flange 4 against the lwalli,

yalthough the Vrivetsv are ordinarily. sufficient forthat-purpose.'v The cage is preferably of 'skeleton form, as shown', whereby'o'penings arel provided to linsure 'pro-per drainage. l

Bythe above.- construction it'will Vbe seen that I have provided a-,valve ofl simple andv eliicient construction andlone in which' the valve is'ffree-toV seat itselfindependentlyof theoperatingstem.v The-stern will hold.l the 100 fil -reinain vertical.

valve against its seatregardless of the position which the container may take, it-not being necessary to have the stem and valve Even .though the stein should be displaced laterally, this displacenient will not affect the valve so long as the Athe valve. 'lhen` as thel rotation of thefsteni head 19 is in. engagement tion 17. i

It will he with the projectially one point Contact so as to. permit free in a lateral direction.

The construction shown provides for a selfj wiping of the valve and the seat. Preferably, theihead 19 isnon-circular in cross section, andthe-box 2O is ofasimilar form: as shown in Fig. 2 sothat rotation of the stein: will also cause rotation of the box and.. consequently of the val-ve. Therefore, it will be. seen that rotation ofthe stein, whenever the valve is :opera-ted, will canse a wiping action between the1 cooperating faces of ,the valve; 'and the seat. Y Y

It willbenotedthat theiange 23 is spa-ced 4from the shoulder 24 of the head 19whentlie valve is in closed position, as shown in 1. Therefore the valve. will be rotated on its seatingv rotation of the; stem 15A without. being lifted; when the.- stem. is first` rotated to open .conti-nues.the shoulder 2e 'will engage'he flange-.23- and' the" valve from?` its seat.

.Until such enga-gementtalesplace, the valve will. rotated' on; its .se at; without sub st antial pressure, on the seat, tl-i-us wiping the.r seat. The same. ,action-takes ,placewhen'V the` valve isbeiI-lg seated the valve rotatingwithout removed after loosen-ing of the set serewsQS,

incl-"ely bv 1in-screwing the cage trornthecasing- 3. 02 if' it is not` desired to;` remove v.the casing, the constructions shownf in- Figgi lmay be` adopteehin whieh the nutl lf3.- isi re-l placed-,with thenut 135- Itwilllbenoted` that this-,nut 1,3 is removable-f-nonni the cage-172i to which lit; isf securedby threaded engagement,

indicated at 29.. f

The cage or thenutlas-the-casefmayfloe, is removed anclthen.azsnitahle-` grinding corn-- pound Ina-yf bef applied tio the valve sea-t, and Y the valve may-V be; rotated back and forth:` on the. seat? to" perform the grinding operation,

Y the openaton.exertingjthe desired` pressure This would not-be possible withthenntgin. engagement with`v the stern,

valve. seat..

noted that the engageIntentV bej .tween the head and projection is a substanrelative movement between these two parts A.

cause lifting of the head out of engagement with the valve as well as rotationthereof. The aperture 30in the top of the cage 12 serves as a guide for the stem. 15, after rein'oval ofthe nut, and this guide maintains the stem in proper positionV for grinding the 1 By situating the valve: seat miA the casing, which is tightly riveted'to the Wall o-f a container, the danger of leakage is greatly reduced` 'lhe onrlyfs'ufrface along` which leakage may take place is the surface of the valve seat, whereas if the seat were disposed in the cage, it would also be necessary to provide a tight joint at the" threaded engagement betweenthe cageand the casing. j v `V lh-ile have showna selected'einbodiment of my invention, l havel dones@ merely for the purpose: offillustration, and Ldo notin.- t-end to liI-nitmyself exceptby thel appended claims. j j

Inclaimizrv ,Y i j j 1.` Ina device ofthe classfdescrihed, a valve casingv having a seat therein. a valve adapted to contactlwith; said seat. and having a relatively small projection. thereon, a cage rigidly secured to saidcasing and. supporting a nut in fixed position thereinfaisteln. threaded' tosaid nut, and having a curvedV head contacting with sai-d. projection 'ont saidvalve, :f

means,looselyholding said head1 in engage.-

Jnent with saidv pprojection,V and. means; to

transmit rotation ofthe. headlfto thel valve..

2, In. a device. o the.. class described/,1a container,A wal-'l having. an iopeningi therein',

valve seat adjacent saidopening,e a cage sethreaded through said nut. and Vhavin a curved head engaging said' val'vea.box is'-y f `from tlierheadl, amernber securedon `said box and having a flange loosely engaging said head toprevent its: removal from said box,

"fes

curredto4 said wall.,m afvalve cooperating with said. seat, a nutcarri'ed by said' cage, a stein and meansfto prevent frota-tionof1 said' head in Y Y the box. Y

3., In a; devicenf. the class, described,a

container wall havingan opening therein, a

valve: seat. adjacent` said opening, a cage se'- cured to said Wallf a valve. cooperatingiwith said seat,A a nut carried byv said cage, `a stein 'threaded through f said nut andifhaving .a

head integral; therewithV and?` engaging said valve,fthe engaging parts on said',` head1 and on said valve having a convex, surface. on one and a@ relatively small projectionA on the "it a other, and means to. transmitrotation ofthek head to the valve. l Y Y v fl.. afdevicev offthe Vclass described, a valver seat. and a valve adaptedto cooperate therewith,a,.box on said val-ve and havingI a plurality ofwsubstantifally lstraight sides, a

i A j ,stein having a head .received in said bon, beca-use. then rotation ot'thestenl. would said headhaving,sidessvertically tapered fie() vwith respect to the sides of the box, but havvmay be rotated bythe stem but may rock withk respect thereto, and means to operate the stem Yto bring the valve into and out of engagement with the seat. i

5. In a device of the class described,'a valve seat and a valve adapted to cooperate therewith, a box on said valve and having a plurality of substantially straight sides, a'

stem having a head received in said box, said head having sides vertically tapered nwith' respect to the sides of the box, but havinga portion of each sideof the head substantially parallel to `an adjacent portion of the adjacent side of the box to cause rotation of the valve upon rotation ofy the stem, conactingl surfaces on the head and valve, one surface being carved, whereby thekvalve maybe rotated by the stem but may rock with respect thereto, means to operate the stem tobring the valve into and out of engagement with the scat, and a member secured on said box and having a flange overhangingsaid head but spaced therefrom to retain the head in the box while permitting limited movement of the valve lengthwise of the stem. j

6. In a device of the class described, a valve seat and a valve adapted to-.cooperate there-f f with, a stem having a head adapted to engage said valve, a fixed member 1n threaded en.

gagement with said stem, whereby rotation of the stem may move the valve to and from its seat, means preventing rotation of the head with respect to the valve, and nieanson the valve overlying the headto prevent sepaf ration of the head and valve but permitting limited movement of the head with respect to the valve longitudinally of the stem, the head and valve having contacting surfaces, one of which is curved, thereby permitting rocking movement of the valve with respect to the head. Y n v 7 In a deviceof the class described a valve seat and a valve adapted to cooperate therewith, a box on sai-d valvey and having a pluv rality of substantially kstraight sides, a stem having a head received in said box, said head i having a curved surface and said valve hav-v ing a small central projection-contacting Awith said curved surface on the head,said head seat and a valve adapted to cooperate therevstem to bring` said valve into and out of enstem `to bring the valves into and out of enf gagement with the seat.

8. In a ldevice of the class described, a valve seat and a valve adapted to cooperate therewith, a polygonal box on said valve, a stem having a polygonal head loosely received in said box and having a curved surfacer engaging said valvethe sidesof said head having. portions thereof parallel to the adj acent'portions of the sides of the box, but spaced a slight distance therefrom to'permit rocking movement between the head and the valve on said curved surface, a small projection on the valve engaging the central portion of theY head, means to operate said stem to bring said v valve into and out of v engagement with said lsOeat and means loosely holding the head in the ox. c v

9.y In a device of the class described, a valve with, a polygonal boxon Said valve, a stem j having a polygonal head loosely received in said box and having a curved surface engagn ing'said valve, the sides of said head having portions thereof parallel to the adjacent por- 'tions of the sides of the, box, but spaced a slight distance therefrom to permit rocking movement between the head and the valve on said Vcurved surface, means yto operate said gagement with said seat, fand means loosely holding thehead in the box. -f

10. In a device of the Aclass described,'a valvey seat and 'a valve 'adapted to cooperate, therewith, a polygonal box onl said valve, a` stem having a polygonal head loosely receivedin said box and having a curved surface v engaging lsaid, valve, the sides of said head i having portions thereof parallel to the adjacent portions of the sides of the box, but spaced a slight distance therefrom to permitrocking movement between the head and the valve on said curvedsurface, a small projection on thevalve engaging the central portion of thehead, the ysides vofsaid head being v tapered vvertically with respect to .theV sides with said seat, and means loosely holding the head in the box.

' JOSEPH J. ROOT,'VJR.

having sides with portions substantially parn allel to the adjacent sides of the box horizontally, but saidsides of the head being tapered with respect to the adjacent sides of the box vertically and adapted to cooperate therewith to cause rotation of the valve upon the rotation of the stem, whereby the valve vmay be rotated by the stem, but may rock with respect thereto, and means to operate the 

